There is one very common cause of night time HF RFI problems, lights! Dimmer controlled Touch controlled Photo Cell Controlled: Home style and street light Motion detected Michael C Martin RFI Services 6469 Old Solomons Island Rd Tracy's Landing MD 20779 301-855-5961 Home/Office 410-741-5153 Fax www.rfiservices.com mike at rfiservices.com